Stimulation device including a pressure field generator and air passage
A sexual stimulation device includes a pressure field generator including a first opening configured to stimulate an erogenous zone of a user's body. A cavity is in fluid communication with the first opening. A tube extends from the cavity. The cavity and the tube together form an airflow channel extending substantially linearly through the pressure field generator from the first opening to an exterior of the sexual stimulation device. A drive unit is coupled to the pressure field generator and is configured to change a volume of the airflow channel and generate alternating pressure variations relative to an ambient pressure at the first opening so as to provide pneumatic pulse stimulation to the erogenous zone of the user's body.
1 . A sexual stimulation device, comprising:
a pressure field generator, comprising:
a first opening configured to stimulate an erogenous zone of a user's body;
a cavity in fluid communication with the first opening; and
a tube extending from the cavity, the tube being rigid;
wherein the cavity and the tube together form an airflow channel extending substantially linearly through the pressure field generator from the first opening to a second opening at an exterior of the sexual stimulation device, the airflow channel provides a continuous open passage at least in a direction from the first opening to the second opening; and
a drive unit coupled to the tube of the pressure field generator and configured to change a volume of the airflow channel by mechanically driving the tube and generate alternating pressure variations relative to an ambient pressure at the first opening so as to provide pneumatic pulse stimulation to the erogenous zone of the user's body,
wherein the pneumatic pulse stimulation is thereby produced by the mechanical driving of the tube that connects the airflow channel from the cavity and first opening to the second opening.
2 . The sexual stimulation device according to claim 1 , wherein the airflow channel is configured to produce a maximum positive pressure alternating with a minimum negative pressure and an absolute value of the minimum negative pressure is greater than an absolute value of the maximum positive pressure.
3 . The sexual stimulation device according to claim 1 , further comprising a handle enclosing the drive unit, wherein the airflow channel extends in a direction substantially perpendicular to a longitudinal axis of the handle.
4 . The sexual stimulation device according to claim 1 , further comprising a handle proximate to the pressure field generator, wherein the airflow channel extends in a direction that forms an angle with a longitudinal axis of the handle.
5 . The sexual stimulation device according to claim 1 , wherein the airflow channel is configured to receive insertion of a penis of the user.
6 . The sexual stimulation device according to claim 1 , wherein the first opening of the pressure field generator is configured to receive a clitoris of the user.
7 . The sexual stimulation device according to claim 1 , wherein a cross-sectional area of the airflow channel changes along its axial direction.
8 . The sexual stimulation device according to claim 1 , wherein the drive unit is configured to move the tube towards and away from the cavity so as to reduce and enlarge a volume of the cavity and thereby create an alternating positive and negative field at the first opening of the cavity.
9 . The sexual stimulation device of claim 1 , wherein the airflow channel extending from the first opening to the second opening is coaxial with the cavity.
10 . The sexual stimulation device of claim 1 , wherein the drive unit changes the volume of the airflow channel by driving the tube in the linear direction of the airflow channel while the tube maintains a constant length in the linear direction.
11 . The sexual stimulation device of claim 1 , wherein the drive unit is further configured to reduce pressure at the first opening below an ambient pressure.
12 . The sexual stimulation device according to claim 1 , wherein the airflow channel includes a check valve configured to permit airflow substantially unidirectionally from within the airflow channel toward the exterior of the sexual stimulation device.
13 . The sexual stimulation device according to claim 12 , wherein the first opening is disposed at a first end of the airflow channel and the check valve is detachably disposed at the second opening of the airflow channel, opposite to the first end of the airflow channel.
14 . The sexual stimulation device according to claim 12 , wherein the check valve includes an adjustable mechanism disposed along an outer periphery thereof and configured to regulate an amount of air discharged from within the airflow channel to the exterior of the sexual stimulation device though the check valve.
15 . The sexual stimulation device according to claim 12 , wherein the check valve comprises a notch through which fluid flows from within the airflow channel to the exterior of the sexual stimulation device.
16 . The sexual stimulation device according to claim 12 , wherein the check valve is positioned at a location spaced apart from the first opening, rather than adjacent to the first opening.
17 . The sexual stimulation device according to claim 12 , wherein the check valve comprises a conical port structure configured to permit unidirectional airflow from within the airflow channel to the exterior of the sexual stimulation device.
18 . The sexual stimulation device according to claim 12 , wherein the check valve is replaceable.
19 . The sexual stimulation device according to claim 1 , wherein the drive unit is an electromagnetic drive mechanism comprising one or more coils and a magnetic ring configured to move in response to a magnetic field generated by the one or more coils so as to vary a volume of the airflow channel.
20 . The sexual stimulation device according to claim 19 , wherein the magnetic ring circumscribes the airflow channel, and the one or more coils are arranged circumferentially around the magnetic ring and positioned outside the airflow channel.
21 . The sexual stimulation device according to claim 1 , wherein the airflow channel comprises:
a first end region including the first opening; and
a second end region accommodating a stimulation tip, the stimulation tip being supported by a flexible base disposed at the second end region;
wherein the drive unit is further configured to drive the stimulation tip to pulsate while changing the volume of the airflow channel.
22 . The sexual stimulation device according to claim 21 , wherein the stimulation tip comprises a check valve.
23 . The sexual stimulation device according to claim 1 , wherein the drive unit comprises:
a rotary motor having an output shaft;
a connecting rod having a first end coupled to the tube of the airflow channel; and
a crankshaft connecting the output shaft of the rotary motor to a second end of the connecting rod.
24 . The sexual stimulation device according to claim 23 , further comprising a guide constraining the tube to move in a linear reciprocating motion.
25 . The sexual stimulation device according to claim 1 , wherein a cross-sectional area of the airflow channel changes at a junction between the cavity and the tube of the pressure field generator, the change in the cross-sectional area being a discontinuous change having a horn shape.
26 . The sexual stimulation device according to claim 25 , wherein the horn shape of the airflow channel is configured to modulate airflow characteristics within the airflow channel by altering flow velocity generated by volume changes in the airflow channel, thereby focusing airflow pulses toward the first opening to intensify stimulation at the erogenous zone of the user's body.
27 . A sexual stimulation device, comprising:
a head unit including a flexible internal wall defining a cavity therein;
a rigid tube connected to the flexible internal wall and in fluid communication with the cavity; and
a drive unit configured to move the rigid tube into and away from the cavity so as to reduce and enlarge a volume of the cavity defined by the flexible internal wall,
wherein the movement of the rigid tube causes the flexible internal wall to deform to vary the volume of the cavity, thereby generating an alternating pressure field at an opening of the cavity that is configured to receive an erogenous zone of a user's body, and
wherein the rigid tube defines a through passage having a substantially constant internal volume and is configured to provide a continuous airflow path from the cavity to an exterior of the sexual stimulation device.
28 . The sexual stimulation device of claim 27 , further comprising a check valve at an end of the rigid tube opposite to where it contacts the cavity configured to allow air to exit therethrough but not enter therethrough.
29 . The sexual stimulation device of claim 27 , wherein the flexible internal wall of the head unit extends to wrap around an exterior of the head unit.
30 . The sexual stimulation device of claim 27 , wherein the flexible internal wall of the head unit extends to line an interior of the rigid tube.
31 . The sexual stimulation device of claim 27 , wherein the alternating pressure field is such that pressure at an opening of the cavity is lower than an ambient pressure.